https://blogs.damiendye.uk/en/tags/chrony/ Recent content in Chrony on Damien Dye's Blog Hugo en-GB Fri, 07 Aug 2026 13:00:00 +0100 https://blogs.damiendye.uk/en/proxmox/vm-time-ptp-kvm/ Fri, 07 Aug 2026 13:00:00 +0100 https://blogs.damiendye.uk/en/proxmox/vm-time-ptp-kvm/ A virtual machine's clock is built on an assumption virtualisation breaks: that the CPU keeps counting. Why guest time drifts on every hypervisor, what the skew actually breaks — Kerberos, TLS, Ceph, Windows — and how ptp_kvm fixes it properly on QEMU/KVM.